IPv6 Standardization

The IETF published RFC8200 last week, which officially makes IPv6 an Internet Standard. While this move was a long time coming—IPv6 has now reached about 20% deployment—a more interesting question is: what has changed since RFC2460, which was a draft standard, was published in 2013? After all, the point of moving from the experimental to the draft standard to the internet standard states is to learn more about the protocol as it operates on the wire, and to make changes to improve deployability and performance.

Where would you look to determine what these changes might be? The IETF draft tracker tool, of course. If you look at the data tracker page for RFC8200, you will find a tab called history. From there, you have the option of looking at the revision differences, as shown below.

When you click on the wdiff button, you will see something like this—

In this case, I went back to the original version of the RFC2460bis draft (which just means the draft was designed to replace RFC2460). There are earlier versions of this draft from before it was accepted as a working group document, but even this comparison should give you some idea of the Continue reading

Worth Reading: BCP79bis and Patents in the IETF

Working on technical standards in the computing, communications and networking industries often involves dealing with patents. Like most standards-development organizations (SDOs), the IETF has policies that deal with patents covering IETF protocols, specifications and standards. The IETF’s first patent policy appeared in RFC 1310 (Mar, 1992), but the basis for today’s policy approach originated with RFC 2026 (October 1996), which still defines many aspects of the Internet Standards Process. The first major overhaul of this policy occurred a decade later in RFC 3979 (also designated as BCP 79). Though the IETF’s policies relating to copyrights, open source code and other forms of intellectual property (IPR) evolved, particularly after the formation of the IETF Trust in December 2005, the IETF’s patent policy remained relatively stable for more than 20 years. —IETF Blog

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The very real dangers of betting on hybrid cloud

Hybrid cloud architectures are currently very popular as a way for enterprises to move to the cloud without abandoning their existing data center investments. At first glance, the strategy makes sense, but there’s a very real danger that the hybrid cloud’s popularity will turn out to be little more than a transitional stage, potentially distracting companies from optimizing either their on-premise data centers or their migration to the cloud.The many meanings of ‘hybrid cloud’ Making things more complicated, the term “hybrid cloud” can have a number of meanings, but at the root it covers any combination of traditional and cloud architectures. That can mean anything from a traditional data center shop running a couple of non-strategic, standalone applications in the cloud to complex architectures with some core applications residing on-premise and others in various cloud implementations.To read this article in full or to leave a comment, please click here

The very real dangers of betting on hybrid cloud

Hybrid cloud architectures are currently very popular as a way for enterprises to move to the cloud without abandoning their existing data center investments. At first glance, the strategy makes sense, but there’s a very real danger that the hybrid cloud’s popularity will turn out to be little more than a transitional stage, potentially distracting companies from optimizing either their on-premise data centers or their migration to the cloud.The many meanings of ‘hybrid cloud’ Making things more complicated, the term “hybrid cloud” can have a number of meanings, but at the root it covers any combination of traditional and cloud architectures. That can mean anything from a traditional data center shop running a couple of non-strategic, standalone applications in the cloud to complex architectures with some core applications residing on-premise and others in various cloud implementations.To read this article in full or to leave a comment, please click here

70% Anker Quick Charge 3.0 63W 5-Port USB Wall Charger – Deal Alert

This premium wall-charger from Anker features 5 ports that pump out 63W of power — enough for the whole family to simultaneously charge multiple devices at the highest speed possible. Right now it’s discounted 70% to just $27 on Amazon, where it averages 4.5 out of 5 stars from over 500 customers. Right now when you buy this item you’ll also activate a 10% discount on other select Anker products including their power bank and bluetooth speaker. See this deal on Amazon.To read this article in full or to leave a comment, please click here

How City Furniture built a better Wi-Fi network

Founded in 1971, City Furniture got its start when Kevin Koenig and his brothers constructed wood bed frames in a garage. They started with a single showroom, Waterbed City, in Fort Lauderdale, Florida, but have now grown to 27 locations across the state and operate under the brands of City Furniture and Ashley Furniture HomeStore brands. The company currently has an older Cisco 802.11g Wi-Fi network that it uses for bar code scanning and inventory management and was reaching the end of its life. City Furniture had big plans to digitize the company by moving its point-of-sale (POS) operations and capabilities to Wi-Fi-enabled tablets so the employees could transact business from anywhere in the store. Also, it wanted to use VoIP to take calls from iPads anywhere in the showroom, as well as access radio apps. To read this article in full or to leave a comment, please click here

How City Furniture built a better Wi-Fi network

Founded in 1971, City Furniture got its start when Kevin Koenig and his brothers constructed wood bed frames in a garage. They started with a single showroom, Waterbed City, in Fort Lauderdale, Florida, but have now grown to 27 locations across the state and operate under the brands of City Furniture and Ashley Furniture HomeStore brands. The company currently has an older Cisco 802.11g Wi-Fi network that it uses for bar code scanning and inventory management and was reaching the end of its life. City Furniture had big plans to digitize the company by moving its point-of-sale (POS) operations and capabilities to Wi-Fi-enabled tablets so the employees could transact business from anywhere in the store. Also, it wanted to use VoIP to take calls from iPads anywhere in the showroom, as well as access radio apps. To read this article in full or to leave a comment, please click here

Administravia 20170703

Just a short note: I’ve updated the sixty book section of the site with a new plugin designed to keep track of book libraries. Along the way, I’ve added an Amazon affiliate code, so maybe I can buy a cup of hot chocolate and a piece of banana nut bread at some point in the future. ? The look should really be a bit nicer, though, and it is easier to add books to this system than manually adding them as I was doing before.

Remember that the idea of sixty books is not that there are actually 60 books on the list, but rather this is what I read in an average year—and hence what I am challenging you to work up to.

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43% off Pecham Vertical Stand for PS4 with Cooling Fan and Dual Controller Charging – Deal Alert

Keep your PS4 or PS4 Slim compact, organized and functioning properly with this vertical stand from Pecham. It features an integrated cooling fan, dual controller changing and a USB hub for powering & charging your phone or other devices as needed. Pecham's stand currently averages 4.6 out of 5 stars from over 185 people on Amazon (82% rate the full 5 stars: read reviews here), where its list price of $29.99 has been reduced 43% to just $16.99. See this deal now on Amazon. To read this article in full or to leave a comment, please click here

IDG Contributor Network: Embrace the heat: Data center tips for summer operations

With the summer solstice in the rear view mirror, those of us north of the equator are preparing for the true summer heat to arrive in force this next month. While BBQs, boating, and your preferred beverage may be the first things on your mind for this next month, many folks in the data center world greet summer with a different attitude entirely. For starters, the period from June to August is Outage Season. Data from previous years shows more centers head offline during this time period than any other 3-month span of your calendar. This includes both poor performing infrastructure to full-scale outages. In addition, data center managers often fight higher energy bills due to hotter external temperatures that drive up the heat inside your facility.To read this article in full or to leave a comment, please click here

IDG Contributor Network: Embrace the heat: Data center tips for summer operations

With the summer solstice in the rear view mirror, those of us north of the equator are preparing for the true summer heat to arrive in force this next month. While BBQs, boating, and your preferred beverage may be the first things on your mind for this next month, many folks in the data center world greet summer with a different attitude entirely. For starters, the period from June to August is Outage Season. Data from previous years shows more centers head offline during this time period than any other 3-month span of your calendar. This includes both poor performing infrastructure to full-scale outages. In addition, data center managers often fight higher energy bills due to hotter external temperatures that drive up the heat inside your facility.To read this article in full or to leave a comment, please click here

IDG Contributor Network: Embrace the heat: data center tips for summer operations

With the summer solstice in the rear view mirror, those of us north of the equator are preparing for the true summer heat to arrive in force this next month. While BBQs, boating, and your preferred beverage may be the first things on your mind for this next month, many folks in the data center world greet summer with a different attitude entirely. For starters, the period from June to August is Outage Season. Data from previous years shows more centers head offline during this time period than any other 3-month span of your calendar. This includes both poor performing infrastructure to full-scale outages. In addition, data center managers often fight higher energy bills due to hotter external temperatures that drive up the heat inside your facility.To read this article in full or to leave a comment, please click here

DMVPN Configurations on Juniper Router

Today I am going to talk about the configurations of DMVPN on Juniper routers and then associate Dynamic VPN with remote clients step by step. I talked about DMVPN earlier in my articles as well where i explained the basics of the DMVPN. I promised at that time that I will come up with the configurations of DMVPN on each and every vendor. Now I am coming up with the DMVPN configurations on Juniper routers first and I will come up with the configurations on Cisco, Huawei and HP routers later on.

Below are some of the links where i started with the DMVPN explanations
DMVPN Basics
DMVPN Vs IPSEC Basics
Quick Comparison: IPSEC vs DMVPN vs EasyVPN vs GETVPN


The configurations used here are for the demo purposes and has no relevance with any of the live and the enterprise networks. What kind of Topology it looks like, So i am pasting here the sample DMVPN topology and has no relevance with the configuration defining below. The configuration is just for your reference to take it further.

Fig 1.1- Sample DMVPN Topology

To configure the VPN tunnel, 
First you need to configure the IKE policy.

ISIS Authentication types (packet captures)

In this post i would like to highlight a couple of “features” of ISIS.
More specifically the authentication mechanism used and how it looks in the data plane.

I will do this by configuring a couple of routers and configure the 2 authentication types available. I will then look at packet captures taken from the link between them and illustrate how its used by the ISIS process.

The 2 types of Authentication are link-level authentication of the Hello messages used to establish an adjacency and the second type is the authentication used to authenticate the LSP’s (Link State Packet) themselves.

First off, here is the extremely simple topology, but its all thats required for this purpose:

Simple, right? 2 routers with 1 link between them on Gig1. They are both running ISIS level-2-only mode, which means they will only try and establish a L2 adjacency with their neighbors. Each router has a loopback interface, which is also advertised into ISIS.

First off, lets look at the relevant configuration of CSR-02 for the Link-level authentication:

key chain MY-CHAIN
 key 1
  key-string WIPPIE
!
interface GigabitEthernet1
 ip address 10.1.2.2 255.255.255.0
 ip router isis 1
 negotiation auto
 no  Continue reading

Defending anti-netneutrality arguments

Last week, activists proclaimed a "NetNeutrality Day", trying to convince the FCC to regulate NetNeutrality. As a libertarian, I tweeted many reasons why NetNeutrality is stupid. NetNeutrality is exactly the sort of government regulation Libertarians hate most. Somebody tweeted the following challenge, which I thought I'd address here.


The links point to two separate cases.
  • the Comcast BitTorrent throttling case
  • a lawsuit against Time Warning for poor service
The tone of the tweet suggests that my anti-NetNeutrality stance cannot be defended in light of these cases. But of course this is wrong. The short answers are:

  • the Comcast BitTorrent throttling benefits customers
  • poor service has nothing to do with NetNeutrality

The long answers are below.

The Comcast BitTorrent Throttling

The presumption is that any sort of packet-filtering is automatically evil, and against the customer's interests. That's not true.

Take GoGoInflight's internet service for airplanes. They block access to video sites like NetFlix. That's because they often have as little as 1-mbps for the entire plane, which is enough to support many people checking email and browsing Continue reading
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